Seiko Cal. 5661 - 320

The 5661-320 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5661 caliber with 21j jewels beating at 28,800 bph, it delivers a 39 hours power reserve. [seikata-wm-20cde8958067]

Also known as: Goldfeather

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

37mm

Case Thickness

15.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

30m

Dial Color

Burgundy

Jewels

21j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1973

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